Locomotive gathering-reel.



l. LE C. DAVIS AND G. M. EATON.

M. s. DAvIsA. ADMIIIISTIIATRIX 0F I. LE c. DAvIs, DECD.

LOCONIOTIVE GATHERING REEL.

APPLICATION FILED Au s.1o, IsIII.

1,326, 326. Patented Dec. 30, 1919.

B M AToRNEY UNITED STATES PATENT EEICE. i

JOSEPH LE CONTE DAVIS, DECEA-SIID, LATE CF PITTSBURGH, PENNSYLVANIA, BY

MYRA SHIELDS DAVIS, A DMINISTRATRIX, OF PITTSBURGH, PENNSYLVANIA, ANDGEORGE IVI. EATON, GF PITTSBURGH, PENNSYLVANIA; SAID INVENTORS ASSIGNORSTO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OFPENNSYLVANIA.

LOCOMGTIVE GATI'IERING-REEL.

Original application led September 1S, 1911, Serial No. 649,983.

Specification of Letters Patent.

' Patented Dec. 30, 1919.

Divided and this application led August 10, 1918. Serial No. 249,483.

Adeclare to the best of our knowledge and belief that the followingspecification, taken In connection with the drawings furnished andforming a part of the same, is a clear,

true, and complete description of said im-4 provement, this applicationbeing a division of application Serial No. 649,983, tiled Sept. 18,1911.

This invention relates to dynamo-electric machines and particularly toan electric motor structure adapted to be mounted on a mining locomotiveto operate the gathering reel thereof, although it is to be understoodthat certain features of the structure are of broader application. Thisapplication is a division of our application Serial No. 6119,983, ledSept, 18, 1911, for locomotive gathering reels.

The object of our invention is to provide a device of the class aboveindicated that shall be simple and durable in construction and adaptedto occupy a minimum amount of space, and the bearings and other wearingparts of which shall be easily accessible.

Electrically operated locomotives for mine purposes are frequentlyprovided with conducting cables which enable them to enter sections ofthe mine Vwhich are not equipped with any trolley or other supplycircuit conductor. yIn order to satisfactorily operate the cable and toprotect it from injury, it is usually carried on a drum or gatheringreel which is mounted on the loco'- motive and is usually eitheroperatively connected to a locomotive axle, or is driven by anindependent motor.

According to our present invention, we

provide a gathering reel having an independent driving motor which maybe so designed as to exert a torque which varies to suit the conditionsof operation, thereby producing a predetermined pull on the cable at alltimes. In order to save space, we mount the motor within the drum andintroduce suitable gearing for driving the drum at relativelylowspeedsalthough the motor armature is adapted to operate at relativelyhigh speeds. Furthermore, to facilitate repairs, the iield.-magnet frameof the motor is so constructed that the armature shall be readilyremovable and replaceable without disassembling the gathering reel andthe motor frame within the reel.

Various novel features and points of advantage in the structure which wepropose will be more fully set forth hereinafter and disclosed in theaccompanying drawing which is a longitudinal section of a gathering reelstructure embodying an electric motor constructed in accordance with our.invention Referring to the drawing, the structure here shown comprisesside frame members or bearing brackets 1 and 2, which are secured to thestructure of a mining locomotive, or to some other suitable base 3, anelectric driving` motor 4:, a gathering reel 5, and suitable gearing.The motor 4L comprises a stationary field-magnet framey 7 having polarprojections 8 and field-magnet windings 9, and an armature 10 having acommutator cylinder 11 and mounted on a relatively longl shaft '12.

The frame 7 is provided with end members or brackets having hollowcylindrical aXial projections 13 and 14, which are of reduced diameterwith respect to the main part of the frame, but of slightly greaterinternal diameter than the armature 10 so that the latter may be readilyremoved aX- ially from either end of the frame without disassembling theframe 7 or the reel 5 mounted thereon. Thus, a damaged armature may bereplaced by a new one without much loss of time, which is a veryimportant consideration in apparatus of this kind. The reducedprojection 14 is integral with and the other projection 13 is bolted tothe main part of the frame 4 and both hollow projections are rigidlysecured, at their outer ends, in openings in the side bearing brackets 1and 2, thus rendering the armature shaft 12 directly accessible from theouter side of the locomotive, by simply removing the bearing blocks 15and 16 which are removably fitted into the ends of the projections 13and 14: and support the motor shaft 12 at its ends.

The reel comprises a hollow cylindrical drum 17 having flanges 1S at itsends and end spiders 19 and 2O which are rotatively supported on thecylindrical projections 13 and 1a and to which the drinn 17 is securedby bolts 21. v

The bearing blocks and 16 are held in position and sta ionary by meansof pins 22 and are provided with oil pockets 23 corresponding to thosein the usual railway motor armature bearings. rlhe shaft 12 is providedwith oil-throwers 2l adjacent to the bearing blocks which are providedwith overhanging cylindrical projections 25, forming annular chambers 26in which the excess oil fromv the shaft bearings is collected. Oilpassages 27 are provided between the chambers 2G and the bearings on thegathering reel, the arrangement of parts being such that the oil isassisted by gravity through the passages 27 into the reel bearings and,consequently, it is only necessary to keep the shaft bearings adequatelylubricated.

The shaft bearings are particularly accessible, as are also the reelbearings, while the concentric arrangement of the motor and the reelpermits the complete device to oc' cupy a minimum amount of space on thelocomotive.

rlhe drinn 17 and the flanges 1S are preferably formed of metal, butthey may be insulated by a jacket or covering 28 of treated canvas or'some other suitable insulating material. The motor shaft 12 has apinion 30 mounted on one end thereof, which is connected by suitablegearing (not shown) to the gear wheel 31 secured to the drum spider 20.rThe motor shaft is also operatively connected to a cable spoolingdevice, not herein shown and forming no part of the present invention,but fully disclosed in our application Serial No. (349,983, heretoforereferred to.

The gear wheels and pinions are so arranged and proportioned that, whenthe motor shaft operates at a relatively high speed, the drum will berotated at a comparatively low speed, while the spooling de- -vice willbe operated at a very low speed.

A collector ring 34 is secured to and insulated from the end member 19of the gathering reel and is connected to the inner end of the cable 33in the usual manner. The end members 19 and 20 of the reel are providedwith oil groves 35 which collect the excess oil from the reel bearingsand discharge it through passages 36.

The bearing blocks 15 and 16 and the sleeve projections 18 and 1st areso proportioned that the armature 10 of the motor may be taken out forrepairs or removed by simply reino-ving one of the blocks. lVith thisarrangement, the alinement of the n1otor and reel bearings is notdisturbed.

Our invention is not limited to the structural details illustrated andvarious modifications may be effected within the spirit and scope of ourinvention.

We claim as our invent-ion:

1. The combination with a field-magnet frame having two vcylindrical endprojections one of said projections being detaclr ably joined to theframe, and an armature disposed Within said frame and removable axiallythrough either of said end projections, of supporting bracketscoperating with said end projections and detachable brush holdersdirectly mounted on said re movable end projections.

2. The combination with a plurality of side supporting members havingoppositely disposed cylindrical 'recesses therein, of a mot'or framehaving tubular end projections adapted to fit into said recesses,armature bearing vblocks removably mounted in said end projections, andmeans for rigidly securing the motor frame andthe bearing blocks to theside members, said side members having openings for supplying oil to thebearing blocks and said end projections having openings located betweenthe side members for draining oil from the bearing blocks.

3. The combination 4with a motor frame having tubular end projectionsand a plurality of side supporting members having op positely disposedcylindrical recesses in them, said projections 'adapted to lit into saidrecesses, armature bearing blocks lo* cated in the end projectionsadjacent to the supporting members and means for rigidly securing saidmotor frame and said bearing blocks to said sidemembers.

In testimony whereof, l have hereunto subscribed my naine this 27th dayof July, 1918. j y v MYRA SHIELDS DAVIS, Administratrice of Josep/L LeConte Davis,

deceased.

In testimony whereof, I have hereunto subscribed my naine this 29th dayof July,

GEORGE M. EATON.

